Rock and Mineral Flashcards
Mineral
a solid inorganic substance of natural occurrence
Rock
the solid mineral material forming part of the surface of the earth and other similar planets
Element
a part or aspect of something abstract
Compound
a thing that is composed of two or more separate elements
Crystal
a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces
Color
the property possessed by an object of producing different sensations on the eye
Luster
a gentle sheen or soft glow, especially that of a partly reflective surface
Streak
a long, thin line or mark of a different substance or color from its surroundings
Cleavage
a sharp division
Fracture
the cracking or breaking of a hard object or material
Density
the degree of compactness of a substance
Ore
a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted
Metallic minerals
minerals which contain one or more metallic elements
Non-metallic minerals
a special group of chemical elements from which no new product can be generated if they are melted
Gemstones
a precious or semiprecious stone, especially one cut
